uint64 timestamp                        # time since system start (microseconds)
uint8 GF_ACTION_NONE = 0                # no action on geofence violation
uint8 GF_ACTION_WARN = 1                # critical mavlink message
uint8 GF_ACTION_LOITER = 2              # switch to AUTO|LOITER
uint8 GF_ACTION_RTL = 3                 # switch to AUTO|RTL
uint8 GF_ACTION_TERMINATE = 4           # flight termination
uint8 GF_ACTION_LAND = 5                # switch to AUTO|LAND

uint8 geofence_violation_reason         # one of geofence_violation_reason_t::*

bool primary_geofence_breached          # true if the primary geofence is breached
uint8 primary_geofence_action           # action to take when the primary geofence is breached